Cylinder-latch for revolvers.



(No Model.)

CYLINDER LATCH F03 REVOLVEBS. (Applicatioq flled Aug. 80,1899.)

OSCAR F. MOSSBERG, OF FITCI'IBURG, MASSACHUSETTS.

CYLINDER-LATCH FOR REVOLVERS.

SPECIFICATION forming part of' Letters Patent No. 670,862, dated March26, 1901,

Application led August 30, 1899. Serial No. 728,938. END model.)

To @ZZ whom it 711/603/ concern:

Be it known that I, OSCAR F. MossBERc, a citizen of the United States,residing at Fitchburg, in the county of Worcester and Commonwealth ofMassachusetts, have invented a new and useful Improvement in Cylinder-Latches for Revolving Firearms, of which the following is aspecification, accompanied by drawings forming a part of the same, inwhich- Figure l represents a side view of a revolving firearm with aportion shown in sectional View in order to disclose that part of theoperative mechanism which embodies my invention. Fig. 2 represents thesame View as that shown in Fig. l, except that the operative partsdisclosed by the sectional view are shown in the position assumed whenthe hammer is cocked. Fig. S'represents atop and detached View of thespring G and trigger D.

Similar letters refer to similar parts in the different figures.

In the drawings, A denotes the handle or stock, B the barrel, C thehammer, D the trigger, and E the trigger-guard, of a revolving iirearmsuch as are now in common use.

F represents the revolving cylinder provided with notches F F and F2 F2to receive lat-ching mechanism, by which the cylinder is heldfroinrotating. The notches F2 are adapted to receive the curved end H of aspring G, which is attached at one end to the frame of the firearm andbears against the point D2 of the trigger. The spring G is provided withshoulders G G in contact with the projecting lugs D2 on the trigger D.

When the hammer C and trigger D are in their normal position, as shownin Fig. l, with the spring G bearing against the point D2 of thetriggeigthe curved end His arranged to engage one ofthe notches F2,thereby holding the cylinder F from rotation; but When the hammer C iscocked and the trigger drawn back into the position shown in Fig. 2 theprojecting lugs D3 press against the shoulders G' of the spring G,thereby depressing the spring and withdrawing the curved end H out ofengagement With the cylinder and at the same time the rocking motion ofthe trigger carries its lug D into engagement With one of the notches F.The rotating cylinder F is therefore locked in position by the end H ofthe spring G when the hammer and trigger are in their normal position,as in Fig. 1; but when the hammer is cocked and the trigger rotated onits pivot-pin I from the position shown in Fig. l to that shown in Fig.2 the curved end H of the spring G is Withdrawn from the cylinder, andthe continued rocking of the trigger D carries the projecting lug D intoengagement with the cylinder. The rotation of the cylinder is effectedin the usual and Wellknown manner in arms of this class during theperiod between the engagement of the spring G and the engagement of thelug D with the cylinder.

The free end of the spring G is reduced in width to form the shouldersG', and the reduced end of the spring is inclosed between the lugs D3 ofthe trigger, which serve to hold the spring from lateral displacementand maintain the curved end H in the plane of the notches F2 as thecylinder is rocked and brought into position for tiring. The lockingmechanism by Which the hammer is cocked, held in its cocked position fortiring, and released by the action of the trigger may be of any knownform of construction and forms no part of my present invention,whichrelates solely to the cylinder-latching mechanism, whereby the cylinderis alternately locked at e'ach end of the rocking movement of thetrigger.

I do not claim, broadly, a spring-latch arranged to engage the cylinderand be depressed by the rocking movement of the trigger. By myconstruction I am able to attach the spring G to the frame by a singlescrew or rivet, and I bring the free end of the spring into accurateregistration with the notches in the cylinder by means of the lugs D3 D3on the trigger, and thereby hold the cylinder in accurate tiringposition, and I utilize the lugs to depress the spring G, by means ofthe shoulders G G', in the path of the lugs D3 D3 as the trigger isrocked, thereby simplifying the construction of the latching mechanism.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination with a rotating notched cylinder of a spring Gattached at one end to the frame of the rearm and having its free endcurved to form a latch adapted to engage the cylinder-notches, shouldersG',G near the IOO curved end of said spring, a pivoted trigger D bearingagainst said spring to raise it into engagement with the cylinder, lugsD3, D3 projecting from said trigger on opposite sides of said springsand engaging the shoulders G', G in order to depress said spring as thetrigger is rocked and hold it from lateral displace ment, substantiallyas described.

2. The combination with a rotating notched cylinder of a spring Gattached at one end to the frame of the firearm and having its free endcurved to form a latch adapted to engage the cy1inder-notches, shouldersGr', G near the curved end of said spring, a pivoted trigger D bearingagainst said spring to raise it into OSCAR F. MOSSBERG.

Witnesses:

GUsTAF ELLsTRoM, ALBERT E. ADDIs.

